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Altera_Forum
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9 years ago

error : Cyclone V XCVR Illegal constraint of Channel PLL

Hi All, As you can see the attachement "xcvr_pin_planner", I'm using 4 transceivers in the cyclcone V ST FPGA. I use only one "Transceiver reconfiguration controller" configured for 8 reconfi...
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Altera_Forum
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9 years ago

The error message says "iSFPDP_XCVR_RX3 is constrained to the location PIN_L2", but from your pin planner shot it looks like pin L2 belongs to channel 1. So it makes sense that the error goes away when you remove channel 1. Better re-check your pin assignments for channel 3.